JEE Main · 2019 · Shift-IImediumBIO-128

Which of the given statements is INCORRECT about glycogen?

Biomolecules · Class 12 · JEE Main Previous Year Question

Question

Which of the given statements is INCORRECT about glycogen?

Options
  1. a

    It is present in some yeast and fungi

  2. b

    It is present in animal cells

  3. c

    Only α\alpha-linkages are present in the molecule

  4. d

    It is a straight chain polymer similar to amylase

Correct Answerd

It is a straight chain polymer similar to amylase

Detailed Solution

Step 1: Glycogen Overview — Glycogen is the primary storage polysaccharide in animals and is also found in بعض yeast and fungi.

Step 2: Comparative Structure — While it is made of glucose units linked by α\alpha-glycosidic bonds (similar to starch), its architecture is highly branched.

Step 3: Identifying the Incorrect Statement — Glycogen is branched like amylopectin, not a straight-chain polymer like amylose. Thus, statement (d) is incorrect.

Key Point: High branching allows for rapid mobilization of glucose during energy demands.

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Which of the given statements is INCORRECT about glycogen? (JEE Main 2019) | Canvas Classes